Rock-drill.



- 'No. 712,592. Patented-"Nov. 4, I902.

\ J. PUECHAGUT.

ROCK DRILL M (Application filed. Jun. 2, 1901.;

(No Model.) 2 sham-sheet I WITNESSES: v [MENTOR 15, vawk -Jimhim Pamagup BY ELSA/jam? yew 6M ATTORNEX UNITED STATES YA-TENT OFFI E,

J OAOHIM PUECHAGUT, OF BLACK DIAMOND, WASHINGTON.

. ROCK-DRILL.

SPECIFICATION forming part of Letters Patent NO. 712,592, dated November 4, 1902.

Application filed January 2 1901, Serial No, 41,918. (No model.)

T0 aZZ whom, it may concern:

Be it known that I, Jo 'cHI P E HAGUT, a citizen of France,"residingatBlack-Diamond, in the county'of King a'nd State of Washington, have inventedcertain new and useful Improvements in Rock-Drills,of which the following is a specification, reference ,being had therein to the accompanying draw ings.

My invention relates to certain new and useful improvements in coal or rock drills,

which improvements relate to the entire machine and all of its parts and include principally the construction of the frame, the drill-spindle, and means for mounting and operating it in any direction, the drill-feed, and means for varying the same, and other details, all of which I shall hereinafter describe.

The object of my invention is to provide a simple, light, and easily-operated rock-drilling machine especially adapted for underground work, as in coal-mines, and each of the several improvements which I have made have in View these general results. 7

In the drawings, where similar numbers refor to correspondingparts in all of the views, Figure 1 is a vertical side view of the machine. Fig. 2 is a vertical front view. Fig; 3 is a central longitudinal section ofa portion of the drill-spindle with mounting for the same and the feed mechanism, 'and Figs. 4 and 5 are details of parts shown in the other figures.

In the drawings the frame is represented by the numerals 1 and2, which are rcspectively a main post and extension-piece. This piece 2 is movable longitudinally of the post 1 through chambered oifset5 on the post by means of rack 8 and pinion 7 and crank 6 on a spindle 2Q,mounted upon the said post. 'When the frame is being lengthened, the piece 2 is held by a pawl 9, engaging with ratchet-wheel 10, and to permit the shortening of the frame the pawl is disengaged from the said ratchet wheel by means, preferably, of a cam 11, raising the said pawl against the action of a spring 12.

27 is a locking-screw to secure the frame at any set length. it

3 is a drill-spindle, having a socket 42 at one end for the reception of the drill, which is retained in the socket by means of a spring- The nut 13 tending upon the opposite side of the nut from the trunnion 15 and in line therewith is a mandrel 15 for mountingloosely a multiple gear- 1 wheel 21 and having near its outer end a shoulder 24 to engage with a spring-actuated latch 25, operating through a slotin the hub of thegear-wheel to prevent thewheel from sliding endwise therefrom.

26 is. a gear-wheel splined to the drill-spindle so as to be free to move longitudinally thereon and adapted to mesh with any of the several gears of the multiple wheel 21.

Splines32 extend through the hub of the gear 26 and that they will move in unison are uuitedby means of, a yoke 28 around the hub, and aspring-latch 29, operating through a slot 30in said yoke, engages with notches 31, positioned upon the hub, so that when the teeth of gear 26 mesh with the teeth of any one of the several gears on the multiple wheel 21 the spring-latch 29 will register with ;a corresponding notch to lock the splines 32 (and cause the revolving friction-rolls 33 in lthe ends thereof to bear against the end 34 of i ;the nut 13.

spline to reduce the friction between the splines and the sides of the keyway 36. The

Rolls 35 are inserted in the carrier'l t is slidable upon the frame to perarms of the carrier by means of the key 18.

22 and 23 are respectively the socket-arm and crank, which is adjustably movable longitudinal of the arm.

mitthe drill-spindle and its operating connections to be moved longitudinally of the 'frame, and is locked thereto in any desired :position by clamping the frame between the The screw-thread upon the spindle forms,

with the nut 13, the drill-feed, which maybe varied by using the difierent gears of the multiple gear-wheel, each speed being adapted for a different quality or hardness of the material being operated upon.

The spindle being movable upon the nut- ,trunnion to vertical angles and the whole -dle 3 and'closed therearound. Then the splines 32 are adjusted and secured within and to the hub of the gear-wheel 26 at one of the said notches, so that when shoved down the drill-spindle the friction-rolls 33 bear against the face 34 of the nut and the said gear will be in a predetermined position to mesh with one of the concentric gears of the multiple wheel2l,which wheelis then mounted upon the mandrel and prevented from sliding off or out of engagement with the gear 13 by means of the latch 25 provided. An important advantage of my device is that the various parts are so -connected or combined one with the other that it is complete in itself andrequires the use of no extraneous means, such as wrenches or bars, liable to be misplaced or lost, to adjust, set, or operate the same.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a rock-drilling machine, in combina tion with the frame and rotatable screwthreaded spindle, of a divided nut for said spindle hung bya trunnion to a carrier adapted to be moved longitudinally to said frame, means to open and close the nut, a latch for locking the nut, a multiplegear-Wheel mounted to revolve loosely upon a mandrel integral with said nut, means to prevent the removal of the said'gear-Wheel from the mandrel, another gear-Wheel mounted upon the said spindle so as to be free to move longitudinally thereon but splined to rotate therewith, said splines extending through the hub of the lastmentioned gear-wheel and adapted to be secured thereto by a latch adapted to engage with slots cut in the hub of the gear-Wheel at detergmined distances so that when the said splines bear against the adjacent face of thenut the said gear-wheel may be set to mesh with any one of the several gears of the multiple wheel, substantially as set forth.

2. In a device of the character described, a trunnion and a mandrel in alinement with each other, a divided nut interposed between the trunnion and mandrel, a U-shaped carrier having its ends connected together by the trunnion passed therethrough, a post on which the carrier is adjustably clamped by the trunnion, a drill-spindle threaded in the divided nut, a gear-wheel splined on the spindle, a crank and multiple gear-wheel mounted on the mandrel, and means for adjusting the first-named gear-Wheel on the spindle whereby said gear-wheel is caused to mesh with the several portions of the multiple gearwheel.

3. In a device of the character described, a spindle, a nut threaded thereon, a mandrel on the nut, a multiple gear-wheel journaled on the mandrel, a second gear-wheel mounted on the spindle, splines located in grooves of the spindle and second-named gear-wheel and bearing on the nut, and means for adjusting the splines within the second-named gear- Wheel to cause said gear-wheel to mesh with the several portions of the multiple gearwheel, substantially as described. 4. In a device of the character described, a spindle, a nut threaded thereon, a multiple gear-Wheel journaled on a trunnion of thenut, a second gear-wheel mounted on they spindle, splines located within grooves of the spindle and second-named gear-wheel, friction-rolls on the splines bearing against the sides of the grooves of the spindle and the end of the nut, a yoke connecting the splines, a spring carried thereby to engage any one of several notches in the hub of the second-named gearwheel whereby said gear-Wheel is adjusted in its position with relation to the nut so as to mesh with one or another of the series of teeth on the multiple gear-wheel, substantially as described.

5. In a device of the character described, a spindle, a nut threaded thereon, a multiple gear- Wheel j ournaled on a trunnion of the nut, a second gear-wheel mounted on the spindle, splines located Within grooves of the spindle and second-nam ed gear-Wheel and bearing on the nut, arms of said splines passing through the second-named gear-wheel and extending along the outside of the hub thereof, a yoke connecting the arms of the splines and slidable on the hub of the second-named gearwheel, and a catch on the yoke adapted to engage stops in said hub to adjust the position of the second-named gear-wheel with relation to the multiple gear-wheel, substantially as described.

6. In a device of the character described, a threaded spindle, a stationary nut through which the spindle is threaded, a multiple gearwheel mounted on a mandrel connected with the nut, a gear-Wheel splined on the spindle and adjustable with relation to the multiple gear-Wheel, and means abutting against the nut for holding the second-named gear-wheel in its adjusted position.

7. In a device of the-character described, a threaded spindle, a stationary nut threaded thereon, a multiple gear-wheel mounted on a mandrel connected with the nut, a gear-wheel splined on the spindle and adjustable with relation to the multiple gear-wheel, and means adjustable on the second-named gear-wheel and bearing on the nut for holding the second-named gear-wheel in its adjusted position, substantially as described.

8. In a device of the character described, a threaded spindle, a stationary nut threaded thereon, a multiple gear-wheel mounted on a mandrel connected with the nut, a gear-wheel splined on the spindle and adjustable with relation to the multiple gear-wheel, and splines bearing on the nut and adjustable in the second-named gear-wheel for holding said gearwheel in its adjusted position, substantially as described.

9. In a device of the character described, a threaded spindle, a stationary nut threaded thereon, a multiple gear-Wheel mounted on a mandrel connected with the nut, a gear-wheel splined on the spindle and adjustable with re- 1 lation to the multiple gear-wheel, splinesfor the second-named gear-wheel having rollers traveling Within grooves of the spindle and rollers bearing on the nut, and means for ad- 

